Efficient milling cutter for machining high-temperature alloy disc ring piece of aero-engine

Abstract

The utility model discloses a high-efficiency milling cutter for machining a high-temperature alloy disc ring piece of an aero-engine, which comprises a cutter handle and a cutting part, the cutting part consists of four bottom blades and four spiral blades, and a U-shaped groove is formed between every two adjacent spiral blades; the spiral angles of the U-shaped grooves of the first tooth and the third tooth in the four spiral blades are 38 degrees, the spiral angles of the U-shaped grooves of the second tooth and the fourth tooth are 40 degrees, and the four bottom blades are of an unequal distribution structure. According to the utility model, the bottom blade adopts an unequal structure, the chip groove adopts a U-shaped groove type, and an unequal spiral structure (different teeth correspond to different spiral angles) is adopted, so that the vibration and cutting force of the cutter in the cutting process are reduced, and the chip removal space is increased. The proper matching of the front angle, the rear angle and the helical angle ensures the strength of the cutting edge and the tool nose, reduces the cutting resistance, and delays the wear failure of the cutting edge. The service life of the cutter is prolonged to the maximum extent through reasonable structural design and optimized geometric parameters, and therefore the purpose of efficient cutting is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a milling cutter structure, in particular to a high -efficient milling cutter for processing aero -engine high -temperature alloy disc ring spare. BACKGROUND

[0002] Disc ring spare is one of the key components of aero -engine, and plays an important role in the aircraft engine. The aero -engine disc ring spare mainly includes turbine disc, compressor disc, integral blade disc and ring spare etc., and the shape is complex, and the machining precision requirement is high. If using conventional hard alloy cutter, then will appear the problem of bad chip removal effect, low processing efficiency, cutter easy to collapse, low cutter life and poor universality. SUMMARY

[0003] The utility model discloses a high -efficient milling cutter for processing aero -engine high -temperature alloy disc ring spare, and the cutter structure is optimized, realizes the optimization of the cutter for the typical disc ring spare, and further improves the hardness, wear resistance and thermal stability of the cutter, improves the cutting efficiency and service life of the cutter.

[0004] The utility model discloses a technical scheme: a high -efficient milling cutter for processing aero -engine high -temperature alloy disc ring spare, including handle and cutting part, and the cutting part is formed by four bottom edges and four spiral edges, wherein the U -shaped groove is formed between the adjacent spiral edges;The spiral angle of the U -shaped groove of the first tooth and the third tooth in the four spiral edges is 38 DEG, and the spiral angle of the U -shaped groove of the second tooth and the fourth tooth is 40 DEG, and the four bottom edges are unevenly distributed structure.

[0005] In the foregoing high -efficient milling cutter for processing aero -engine high -temperature alloy disc ring spare, the radial rake angle of the spiral edge is 4-5 DEG, and the radial relief angle is 11-13 DEG.

[0006] In the foregoing high -efficient milling cutter for processing aero -engine high -temperature alloy disc ring spare, the bottom edge rake angle of the bottom edge is 7 DEG, the R rake angle is 4 DEG, the bottom edge relief angle is 10 DEG, the R relief angle is 14 DEG, and the four bottom edges are unevenly distributed according to 0 DEG, 86 DEG, 180 DEG 266 DEG.

[0007] The utility model discloses the beneficial effects: compared with prior art, the bottom edge of the utility model uses uneven structure, the chip removal groove adopts U -shaped groove type, and the uneven spiral structure (different tooth corresponding spiral angle is different) reduces the vibration and cutting force of cutter in the cutting process, improves the chip removal space. The matching of proper rake angle, relief angle and spiral angle reduces the cutting resistance while guaranteeing the strength of edge and nose, and delays the edge wear failure. The reasonable structure design and the optimal geometry parameter improve the service life of cutter to the maximum degree, to meet the purpose of high -efficient cutting.

[0008] Overall, the utility model discloses according to the process characteristics of the machining material cutting processing, through the optimization of tool structure, realize the optimization of typical disc ring class spare processing tool, further improve the hardness, wear resistance and thermal stability of tool, improve the cutting efficiency and service life of tool. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the structural schematic diagram of the utility model;

[0010] Figure 2 It is Figure 1 The side surface structural schematic diagram of;

[0011] Figure 3 It is Figure 1 The B-B direction structural schematic diagram of;

[0012] Figure 4 It is Figure 1 The I-I direction structural schematic diagram of;

[0013] Figure 5 It is Figure 2 The E-E direction structural schematic diagram of.

[0014] Fig. 1-1 handle, 2-2 cutting part, 3-3 bottom blade, 4-4 spiral blade, 5-U groove. DETAILED DESCRIPTION

[0015] The utility model will be further described below in connection with the drawings and examples, but not as the basis for limiting the utility model.

[0016] The embodiment of the utility model: a kind of for machining aero-engine high-temperature alloy disc ring piece high-efficiency milling tool, including handle 1 and cutting part 2, cutting part 2 is formed by four bottom blades 3 and four spiral blades 4, wherein U-shaped groove 5 is formed between adjacent spiral blades 4;The spiral angle of U-shaped groove 5 of first, third tooth in four spiral blades 4 is 38 °, the spiral angle of U-shaped groove 5 of second, fourth tooth is 40 °, the radial rake angle of the spiral blade 4 is 4-5 °, and the radial relief angle is 11-13 °.

[0017] Four bottom blades 3 are unevenly distributed structure, four bottom blades 3 are unevenly distributed according to 0 °, 86 °, 180 ° 266 °. The bottom blade rake angle of bottom blade 3 is 7 °, the R rake angle is 4 °, the bottom blade relief angle is 10 °, and the R relief angle is 14 °,

[0018] The four bottom edges 3 use unequal division structure, the chip groove adopts U-shaped groove 5, and the unequal spiral structure (different spiral angles corresponding to different spiral edges 4) reduces the vibration and cutting force of the tool in the cutting process, and improves the chip removal space. The matching of the appropriate rake angle, relief angle and spiral angle reduces the cutting resistance while ensuring the strength of the edge and the tool tip, and delays the edge wear failure. The reasonable structure design and the optimal geometric parameters maximize the tool service life, thereby meeting the purpose of efficient cutting.

Claims

1. A high-efficiency milling tool for machining high-temperature alloy disc ring parts for aero-engines, characterized in that: It includes a tool holder (1) and a cutting part (2). The cutting part (2) consists of four bottom cutting edges (3) and four spiral cutting edges (4), wherein a U-shaped groove (5) is formed between adjacent spiral cutting edges (4); the spiral angle of the U-shaped groove (5) of the first and third teeth of the four spiral cutting edges (4) is 38°, and the spiral angle of the U-shaped groove (5) of the second and fourth teeth is 40°. The four bottom cutting edges (3) are unequally distributed.

2. The high-efficiency milling tool for machining high-temperature alloy disc rings for aero-engines according to claim 1, characterized in that: The radial front angle of the spiral blade (4) is 4-5° and the radial rear angle is 11-13°.

3. The high-efficiency milling tool for machining high-temperature alloy disc rings for aero-engines according to claim 1, characterized in that: The bottom edge (3) has a front angle of 7°, a front angle of 4°, a back angle of 10°, and a back angle of 14°. The four bottom edges (3) are distributed unequally at 0°, 86°, 180°, and 266°.

Images